Trilobita - Olenida - Pterocephaliidae
Alternative spelling: Petrocephaliidae
Synonym: Pterocephalidae Kobayashi 1935 [replaced name]
Parent taxon: Olenida according to J. M. Adrain 2011
See also Harrington et al. 1959, Jell and Adrain 2002, Paterson and Laurie 2004 and Whittington et al. 1997
Sister taxa: Andrarinidae, Aphelaspidae, Asaphiscidae, Cedariidae, Dokimokephalidae, Eulomidae, Idahoiidae, Loganellidae, Olenidae, Parabolinoididae
Subtaxa: Anechocephalus Aphelaspidinae Beigongia Bromella Camaraspis Cilia Dikelocephalites Flabellocephalus Housia Housiinae Jubileia Labiostrella Lunacephalus Luotuolingia Metachangshania Morosa Paramaladioidella Pauciella Pedinaspis Pedinocephalites Pelicephalus Plesiocilia Proapatokephaloides Prodikelocephalites Protemnites Pseudaphelaspis Pterocephaliinae Pulchricapitus Stenambon Tumicephalus Uxunella Yangweizhouia Yingziaspis
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Taoyuanian of China (7 collections), the Russian Federation (6), South Korea (10)
• Cambrian of Australia (2), Canada (12: Alberta, British Columbia, Newfoundland, Newfoundland and Labrador, Yukon), China (6), Kazakhstan (18), the Russian Federation (17), United States (229: Alaska, Arkansas, California, Indiana, Minnesota, Missouri, Montana, Nevada, Nevada and Utah, Oklahoma, Pennsylvania, South Dakota, Texas, Utah, Wisconsin, Wyoming)
Total: 307 collections including 441 occurrences